P. C. Kaluthanthri, U. Weerappuli
DOI:
10.9734/ajeba/2021/v21i2230520
Page: 1-15
Atria Dewi, Sudrajat ., Saring Suhendro
DOI:
10.9734/ajeba/2021/v21i2230521
Page: 16-28
Fuzhong Chen, Danqing Cheng Zhang
DOI:
10.9734/ajeba/2021/v21i2230522
Page: 29-45
Mia Laksmiwati, Agoestina Mappadang, Amir Indrabudiman, Vindari Gita Riza
DOI:
10.9734/ajeba/2021/v21i2230523
Page: 46-57
Emmanuel Brobbey
DOI:
10.9734/ajeba/2021/v21i2230524
Page: 58-68